Spark-arrester.



. J. LAIR & H. E. WIDDOWS- SPARK ARRESTER.

Patented Mar. 15, 1910.

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Patented Mar. 15, 1910.

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if rrn SAE% 11 l WILLIAM J. LAIR AND HOWARD E. WIDDOWS, 0F CONNERSVILLE,INDIANA.

SPARK-ARRESTER.

T 0 all whom it may concern:

Be it known that we, IVILLIAM J. LAIR and HOWARD E. IVIDDows, citizensof the United States, residing at Gonnersville, in the county of Fayetteand State of Indiana, have invented certain new and useful Improvementsin Spark-Arresters, of which the following is a specification.

This invention relates to spark arr-esters and more particularly toarresters for locomotive smoke stacks and has for its object to providea spark arrester which will be movable into and out of operativeposition and which will be constructed and arranged to be automaticallymoved into operative position when the engine is exhausting through thesmoke stack.

Other objects and advantages will be apparent from the followingdescription and it will be understood that changes in the specificstructure shown and described may be made within the scope of the claimwithout departing from the spirit of the invention.

In the drawings forming a portion of this specification and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is an elevational view of the mechanism in operative position,the smoke stack being shown in section, Fig. 2 is a view similar to Fig.1, showing the mechanism in inoperative position, Fig. 8 is a top plan,Fig. 4 is a side elevation of the complete structure.

Referring now to the drawings, there is shown a smoke stack 5, having anarrester 6 therewithin in the form of an inverted cone. This arresterconsists of two semiconical foraminous members 7, each of which isprovided with a semi-circular stiifening band 8 at its upper end.

Spaced pairs of inwardly extending bolts 9 are engaged in the smokestack 5 at diametrically opposite points, nuts 10 being engaged with thebolts outwardly of the smoke stack, and other nuts 10 being engaged withthe bolts inwardly of the smoke stack. The heads 11 of the bolts lie inspaced relation to the nuts 10 and engaged with the bolts and restingagainst the outwardly presented faces of the heads, there are shortmetallic straps 12. The strengthening bands 8 are engaged pivotally attheir ends with the corresponding bolts 9 of the opposed pairs, the endsof these bands lying between the plates 12 and the nuts 10, and it willthus be seen Specification of Letters Patent.

Application filed January 14, 1909.

Patented Mar. 15, 1910.

Serial No. 472,354.

that the members 7 may be moved pivotally to bring their mutuallyadjacent edges into and out of co-engagement.

A transverse guide member 13 is mounted in the smoke stack above thearrest-er 6 and a similar guide member 14 is mounted in the smoke stackbelow the arrester. A rod 15 extends vertically and is slidably engagedin the members 13 and 14:. A collar 16 is adjustably engaged with therod 15 and is movable with the rod into and out of engagement with themember 14;, the collar thus limiting the movement of the rod in onedirection and absorbing a portion of the shock incident to the actuationof the mechanism. A collar 17 is mounted upon the rod 15 below themember 13 and is arranged for engagement of this member to limit theupward movement of the rod. An impact plate 18 is arranged upon the rod15 above the member 13 and is held into position by means of a collar 19carried by the plate and having a set screw 20 engaging the rod.

Links 21 are pivoted to the members 7 and to the rod 15 and when themembers 7 are in co-engaged position, the links 21 extend upwardly andinwardly. The links thus form toggle levers to separate the members 7when the rod is moved downwardly.

It will be observed that under normal conditions, the members 7 will liein separated position, but that the impact of exhaust steam against theplate 18 will cause this plate to rise, thus bringing the members 7 intooperative position.

An upwardly extending bracket 22 is carried by the smoke stack and has alever 23 pivoted thereto, this lever having a slotted end 24 receiving atraveler 25 carried by the upper end of the rod 15, and counterpoises 26are carried by the lever at opposite sides of its pivot point, foroperation to properly adjust the lever. A bracket 27 is carried by theside of the smoke stack and has an angle lever 28 pivoted thereto andconnected with the lever 23 by means of a rod 29, and having a draft rod30 connected thereto which may be pulled by the engineer to move thelever 23 into position to separate the members 7.

What is claimed is In a spark arrester, the combination with a smokestack, of transverse guide members located in the smoke stack and spacedvertically from each other, said transverse members having verticalguide openings therein, a rod slidably engaged in the guide openings, anadjustable stop collar carried by the rod below the upper guide member,said collar being arranged for engagement of the upper guide member tolimit the upward movement of the rod, a second stop collar adjustablymounted on the rod above the lower guide member for engagement of thesaid member to limit the downward movement of the rod, a collaradjustably mounted upon the rod above the upper guide member, animpactpla-te carried by the upper collar, semi-conical members pivotedto the smoke stack and lying therewithin, said conical members being ofa foraminous nature and being arranged for movement to bring themutually adjacent portions into and out of mutual engagement, and linksconnected with the vertically movable rod and with the lower portions ofthe semiconical members for movement of thesaid members inwardly intoengagement with each other when the rod is moved upwardly.

In testimony whereof we afiiX our signatures, in presence of twowitnesses.

WILLIAM J. LAIR. HOVARD E. \VIDDOVS. 'itnesses O. E. DALE, S. E. GORDIN.

